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Re: Re: Pink X pink giving apricot

  • Subject: Re: Re: Pink X pink giving apricot
  • From: Autmirislvr@aol.com
  • Date: Sat, 10 Jan 2009 11:51:16 -0500

Chuck, when I look at the parents of EBB, I'm impressed with the huge doses of anthocyanin in their background.  At first glance, I'd expect a higher percentage of purple seedlings due to EBB being the pod parent. 

Could the blocking, patterns of the plicatas, & possibly the broken color irises, be responsible for the higher percentage of pink tinted seedlings?  (due to the anthocyanin being blocked)

<<Here is a chart of a cross of Eramosa Blushing Bride X Dreamsicle and their children. all >>

Betty Wilkerson

-----Original Message-----
From: irischapman@aim.com
To: iris-photos@yahoogroups.com
Sent: Sat, 10 Jan 2009 9:57 am
Subject: [iris-photos] Re: Pink X pink giving apricot

Here is a chart of a cross of Eramosa Blushing Bride X Dreamsicle and
their children. all of the seedlings that have so far bloomed from this

Eramosa Blushing bride is a light pink with a slight anthocyanin wash.
Some of the offspring have heavy anthocyanin as the gene suppressing
anthocyanin is absent in some of the seedlings. The first seedling, the
violet , has no carotene in petals , just anthocyanin, so it is violet.
the others have lycopene plus anthocyanin to give various shades or
red-violet, or rose colour.

The carotene present as lycopene varies in phenotype from pink to
peach, with some apricot. In addition the might be some trace
anthocyanin to add to shading. This results from mixing up of the
modifier genes which are present in each of the parents , but are not
complementary. The modifier genes work to prevent bleed through of
the carotenes, that is partial conversion of lycopene to byproducts of
alpha and beta-carotene. These two conversions are separate and
independent conversions and to produce pure pink, they must both be

In pairs of pinks that have compatible modifier genes you can have all
pink offspring from two pink parents..

It would appear that there is no alternative yellow present in these
seedlings, and certainly not present in either parent as a phenotype.

For interest in how these pictures are prepared. I used Adobe Indesign,
and export to a jpg file. Photos preped for compression and suitable
size with Adobe Photoshop.

There is likely more available and cheaper programs that can do the
same thing.

Chuck Chapman

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